After two tragic accidents in the space of a week London Underground driver and aspiring writer Paul Callow (Mackenzie Crook PIRATES OF THE CARIBBEAN) is feeling suitably low. That is until a co-worker tells him of the three and out rule if three people fall under your train within a month youre forcibly retired with ten years salary Seeing an opportunity to clear his debts and work on his novel Paul sets out on the grim task of finding a poor soul willing to end their days under his train.